<div class="refentry" lang="en" xml:lang="en"><a id="glEnableVertexAttribArray"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glEnableVertexAttribArray — Enable or disable a generic vertex attribute array</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table style="padding-bottom: 1em"><tr><td><code class="funcdef">void <b class="fsfunc">glEnableVertexAttribArray</b>(</code></td><td>GLuint  </td><td><var class="pdparam">index</var><code>)</code>;</td></tr></table><table><tr><td><code class="funcdef">void <b class="fsfunc">glDisableVertexAttribArray</b>(</code></td><td>GLuint  </td><td><var class="pdparam">index</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>index</code></em></span></dt><dd><p>Specifies the index of the generic vertex
		    attribute to be enabled or disabled.</p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p><code class="function">glEnableVertexAttribArray</code> enables the
	generic vertex attribute array specified by
	<em class="parameter"><code>index</code></em>.
	<code class="function">glDisableVertexAttribArray</code> disables the
	generic vertex attribute array specified by
	<em class="parameter"><code>index</code></em>. By default, all client-side
	capabilities are disabled, including all generic vertex
	attribute arrays. If enabled, the values in the generic vertex
	attribute array will be accessed and used for rendering when
	calls are made to vertex array commands such as
	<a class="citerefentry" href="glDrawArrays"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>,
	<a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
	<a class="citerefentry" href="glDrawRangeElements"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>,
	<a class="citerefentry" href="glArrayElement"><span class="citerefentry"><span class="refentrytitle">glArrayElement</span></span></a>,
	<a class="citerefentry" href="glMultiDrawElements"><span class="citerefentry"><span class="refentrytitle">glMultiDrawElements</span></span></a>,
	or
	<a class="citerefentry" href="glMultiDrawArrays"><span class="citerefentry"><span class="refentrytitle">glMultiDrawArrays</span></span></a>.</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p><code class="function">glEnableVertexAttribArray</code> and
	<code class="function">glDisableVertexAttribArray </code> are available
	only if the GL version is 2.0 or greater.</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p><code class="constant">GL_INVALID_VALUE</code> is generated if
	<em class="parameter"><code>index</code></em> is greater than or equal to
	<code class="constant">GL_MAX_VERTEX_ATTRIBS</code>.</p><p><code class="constant">GL_INVALID_OPERATION</code> is generated if either
	<code class="function">glEnableVertexAttribArray </code> or
	<code class="function">glDisableVertexAttribArray </code> is executed
	between the execution of
	<a class="citerefentry" href="glBegin"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a>
	and the corresponding execution of
	<a class="citerefentry" href="glEnd"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>.</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p><a class="citerefentry" href="glGet"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a>
	with argument <code class="constant">GL_MAX_VERTEX_ATTRIBS</code></p><p><a class="citerefentry" href="glGetVertexAttrib"><span class="citerefentry"><span class="refentrytitle">glGetVertexAttrib</span></span></a>
	with arguments <em class="parameter"><code>index</code></em> and
	<code class="constant">GL_VERTEX_ATTRIB_ARRAY_ENABLED</code>
	<em class="parameter"><code></code></em></p><p><a class="citerefentry" href="glGetVertexAttribPointerv"><span class="citerefentry"><span class="refentrytitle">glGetVertexAttribPointerv</span></span></a>
	with arguments <em class="parameter"><code>index</code></em> and
	<code class="constant">GL_VERTEX_ATTRIB_ARRAY_POINTER</code></p></div>
        {$pipelinestall}{$examples}
        <div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p><a class="citerefentry" href="glArrayElement"><span class="citerefentry"><span class="refentrytitle">glArrayElement</span></span></a>,
	<a class="citerefentry" href="glBindAttribLocation"><span class="citerefentry"><span class="refentrytitle">glBindAttribLocation</span></span></a>,
	<a class="citerefentry" href="glDrawArrays"><span class="citerefentry"><span class="refentrytitle">glDrawArrays</span></span></a>,
	<a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
	<a class="citerefentry" href="glDrawRangeElements"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>,
	<a class="citerefentry" href="glMultiDrawElements"><span class="citerefentry"><span class="refentrytitle">glMultiDrawElements</span></span></a>,
	<a class="citerefentry" href="glPopClientAttrib"><span class="citerefentry"><span class="refentrytitle">glPopClientAttrib</span></span></a>,
	<a class="citerefentry" href="glPushClientAttrib"><span class="citerefentry"><span class="refentrytitle">glPushClientAttrib</span></span></a>,
	<a class="citerefentry" href="glVertexAttrib"><span class="citerefentry"><span class="refentrytitle">glVertexAttrib</span></span></a>,
	<a class="citerefentry" href="glVertexAttribPointer"><span class="citerefentry"><span class="refentrytitle">glVertexAttribPointer</span></span></a>
	</p></div><div class="refsect1" lang="en" xml:lang="en"><div id="Copyright"><h2>Copyright</h2><p>
            Copyright © 2003-2005 3Dlabs Inc. Ltd.
            This material may be distributed subject to the terms and conditions set forth in
            the Open Publication License, v 1.0, 8 June 1999.
            <a class="ulink" href="https://opencontent.org/openpub/" target="_top">https://opencontent.org/openpub/</a>.
        </p></div></div></div>
